Height adjustable sign holder



FIG. 1 is a front, left side, top perspective view of a height adjustable sign holder, in the lower position, showing my new design;

FIG. 2 is a front, right side, top perspective view thereof, in the raised position;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front side elevational view thereof, in the lowered position, the rear side elevational view being identical;

FIG. 5 is a right side elevational view thereof, in the lowered position, the left side elevational view being identical;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a front side elevational view thereof, in the raised position, the rear side elevational view being identical; and,

FIG. 8 is a right side elevational view thereof, in the raised position, the left side elevational view being identical. 

The ornamental design for a height adjustable sign holder, as shown and described. 